Windmill



J.. M. MAY. h Windmill.

No. 227,175. Patented lMay 4,1880.

17? Ven/Z722 UNITED STATES PATENT OFFICE.

JOHN M. MA'Y, OF CEDAR RAPIDS, IOWA.

WINDMILL.

SPECIFICATION forming part of Letters Patent No. 227,175, dated May 4, 1880.

Application filed December 24, 1879.

To all whom it may concern Be it known that I, JOHN M. MAY, of Gedar Rapids, in the county ot' Linn, and in the State ot' Iowa, have invented certain new and useful Improvements in Vindmills; and I do hereby decla-re that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters ot' reference marked thereon, making a part of this specification.

The nature ot' my invention consists in the construction ot' a windmill having the entire weight ot' the superstructure of the mill resting and revolving in a circular oil-reservoir of large capacity; also, in a spring to aid a vane that is pivoted to a turn-table for the control ot' the mill in starting from and reaching a state of inertia or rest, and in giving elasticity and evenness to its movement when in use.

In the annexed drawings, Figure l is a vertical section, and Fig. 2 a plan view, of a part of a windmill embodying' my invention.

The parts A, B, and O form the turn-table on the post D, the superstructure of the mill A being in the form of a tube or socket bolted iirmly to D, and has in its upper end a capacious circular oil-reservoir, E, that receives the circular ledge F, extending downward from the under side of the part B. On this ledge, within the oil-reservoir E, the mill rests and revolves.

B and C are firmly bolted together by screwbolts M, or in some other suitable manner.

The ledge F ot part B, G of part A, and H and I of part C serve to keep each part in place, and allow parts B and G and the entire superstructure to revolve freely in the path of a horizontal circle as the wind blows from the different points of the compass. The ledges G and J form the sides of the oil-reservoir,

and the ledge L keeps the Water from the oilreservoir. The oil is supplied through holes K in part B.

V is the vane, pivoted at U to the part B, which vane is supported by a rod, W, and post X.

Y is a spring, attached to the vane to ease the vane as it approaches and leaves a state ot` inertia against gage-posts Z Z, the tension of the spring being governed by the position on B of the pins Z Z. The spring also gives an easy gliding movement to the vane, obviating hitches and concussions that sometimes occur in high and ilawy or chopping winds.

Two springs instead of one may be at tached to the vane or to part B, though one, as shown and described, is cheaper, and substantially serves all the purposes required.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination of the tube or socket A, formed with the oil-reservoir E, the turn-table B, and flanged bottom G, fastened to the turntable, substantially as and for the purposes herein set forth.

2. The combination of the turn-table B, vane V, spring Y, tube or socket A, formed with the oil-reservoir E, and the an ged bottom G, all constructed substantially as and for the purposes herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 11th day of December, 1879.

JOHN M. MAY.

Witnesses:

U. C. BLAKE, FRANK C. HORMEL. 

